USB Backup Drives & Thumb drives not seen by Mac.

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Level 4

3,885 points

13" MBP.R. 2015. running OSX 10.11.4.

MBP can't see USB connected thumb or portable drives. Was working OK..

Will work as normal immediately after a restart.. After sleep ~ No go.

I have tried 64GB SanDisk & 2T Lacie Time Machine Backup Drive. Both USB3 purchased online 2015 with MBP from Apple.

Not seen in Disc Utility either.

Have tried both USB ports and have installed 10.11.4 combo update.

Always ejected before removing from USB port

No Apple Stores in New Zealand..

MacBook Pro with Retina display, OS X El Capitan (10.11)

Posted on Apr 9, 2016 5:44 PM

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Answer 1

Best reply

Level 4

3,885 points

Just for info:

After a phone call to Apple support ( Ref Apple Care) it's fixed.

Reset NVRAM and reset the System Management Controller (SMC)

Happy as. 🙂

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